A. Be zero
B. Be 0.2 V
C. Not fall below 0.7 V
D. None of the above
Which quantity consists of a unit 1KWh ?
A. Energy
B. Time
C. Power
D. Charge
1 kWh is the amount of energy used by a 1 kW (1000 watt) resistance for 1 hour. Energy = Power × Time.
A. individual component parameters
B. a percent of the total power depending on resistor ratios
C. total current squared multiplied by the resistor values
D. a percent of the voltage division ratio squared
A. 1 MΩ
B. 24 kΩ
C. 18 kΩ
D. 12 kΩ
If 1 A current flows in a circuit, the number of electrons flowing through this circuit is
A. 0.625 × 1019
B. 1.6 × 1019
C. 1.6 × 10-19
D. 0.625 × 10-19
The charge of one electron is 1.6 × 10 – 19 coulomb. Again 1 A current means transferring of 1 coulomb charge per one second.
Internal resistance of ideal current source is ?
A. zero
B. infinite
C. finite
B. 100 ohms
Ideal current source delivers energy at specified current, which is independent on voltage across the load. The internal resistance must become very high to deliver maximum current.
A. Power
B. Voltage
C. Current
D. None of the above